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All Journal Jurnal Biologi dan Pembelajarannya (JBP) JPS (Jurnal Pharma Saintika)
Devita
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Agriculture, Biological Sciences & Forestry Education Health Professions Immunology & microbiology

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OPTIMASI WAKTU EKSTRAKSI DAUN PECUT KUDA (Stachytarpheta jamaicensis) DENGAN METODE DIGESTI DAN NILAI RENDEMEN EKSTRAKNYA Amin, asni; Risda Waris; Devita
Journal Pharma Saintika Vol. 8 No. 2 (2025): Jurnal Pharma Saintika
Publisher : Program Studi DIII Farmasi Akademi Farmasi Dwi Farma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51225/jps.v8i2.76

Abstract

Abstract: Extraction of natural medicines can not only extract chemical components from the sample, but also be a guideline in determining yield value (extract). One of the extraction methods is digestion. The purpose of this research is to optimize the digestion extraction time and determine the high yield value of blue porterweed (Stachytarpheta jamaecensis) leaf extract obtained. Horse whip leaf extract (EPK) was obtained by digestion at 2 (D1), 4 (D2) and 6 (D3) hours at 40oC using 70% ethanol solvent, the ethanol extract was evaporated with a rotary vaccum-evaporator 10 degrees below its boiling point to become a thick extract. Each extract was weighed and the yield value was calculated. The results of digestion extraction obtained the yield value of EPK in D1 = 12,4%; EPK in D2 =  15,36%, and EPK in D3 = 12.3%. Extraction optimization using the digestion method can be used as a reference for the development of herbal medicines for  traditional medicine manufacturers.
Pengaruh Media Pembelajaran Critical Wheel Berbasis Problem Based Learning (PBL) pada Materi Animalia Terhadap Kemampuan Berpikir Kritis Siswa Kelas X SMA/MA auliya; Nurul , Eva; Sulistiana, Devita; Eva; Devita
Jurnal Biologi dan Pembelajarannya (JB&P) Vol 6 No 2 (2019): October 2019
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jbp.v6i2.14790

Abstract

Tujuan dari penelitian ini adalah mengetahui pengaruh media pembelajaran Critical Wheel terhadap kemampuan berpikir kritis siswa mata pelajaran biologi materi animalia. Desain penelitian yang diterapkan adalah pretest-posttest control group design dengan instrumen berupa test essay. Berdasarkan perhitungan dengan SPSS pada uji ANCOVA diketahui pengaruh penggunaan media Critical Wheel pada kelas eksperimen adalah sebesar 9,6%.
Co-Authors Asni Amin auliya Eva Nurul , Eva Risda Waris Sulistiana, Devita